Your Progress - Chapter 40% complete
1Book Back Questions23 questions
Q.1The reflected image of the letter ‘q’ is …….v
Answer:
P
Q.2A rhombus has ………… lines of symmetry.v
Answer:
two
Q.3The order of rotational symmetry of the letter ‘Z’ is ……….v
Answer:
2
Q.4A figure is said to have rotational symmetry, if the order of rotation is atleast ……….v
Answer:
two
Q.5……… symmetry occurs when an object slides to new position.v
Answer:
Translation
Q.6A rectangle has four lines of symmetry.v
Answer:
False
Q.7A shape has reflection symmetry if it has a line of symmetry.v
Answer:
True
Q.8The reflection of the name RANI is INAЯ.v
Answer:
False
Q.9Order of rotation of a circle is infinite.v
Answer:
True
Q.10The number 191 has rotational symmetry.v
Answer:
False
Q.11Using the given horizontal line/ vertical line as a line of symmetry, complete each alphabet to discover the hidden word. v
Answer:
(i) DECODE
(ii) KICK
(iii) BED
(iv) WAY
(v) MATY
(vi) TOMATO
Q.12Which of the following letter does not have a line of symmetry? Hint: A, T, U have one line of symmetryv
- A. A
- B. P
- C. T
- D. U
Answer:
(b) P
Q.13Which word has a vertical line of symmetry? Hint: D, N, E have no vertical line of symmetryv
- A. DAD
- B. NUN
- C. MAM
- D. EVE
Answer:
D, N, E have no vertical line of symmetry
Q.14The order of rotational symmetry of 818 is ………v
- A. 1
- B. 2
- C. 3
- D. 4
Answer:
(b) 2
Q.15The order of rotational symmetry ★ is ___v
- A. 5
- B. 6
- C. 7
- D. 8
Answer:
(a) 5
Q.16Draw and answer the following. (i) A triangle which has no line of symmetry. (ii) A triangle which has only one line of symmetry (iii) A triangle which has three lines of symmetry.v
Answer:
(i) Scalene triangle
(ii) Isosceles triangle
(iii) Equilateral triangle
Q.17The three-digit number 101 has rotational and reflection symmetry. Give five more examples of three-digit numbers that have both rotational and reflection symmetryv
Answer:
The digits 0, 1, 8 have rotational and reflection symmetry.
∴ The three digits numbers 181, 111, 808, 818, 888 have both rotational and reflection symmetry.
Q.18Shade one square so that it possesses (i) One line of symmetry (ii) Rotational symmetry of order 2v
Answer:
Q.19Join six identical squares so that atleast one side of a square fits exactly with any other side of the square and has reflection symmetry (any three ways).v
Answer:
Q.20Draw the following (i) A figure which has reflection symmetry but no rotational symmetry. (ii) A figure which has rotational symmetry but no reflection symmetry. (iii) A figure which has both reflection and rotational symmetry.v
Answer:
Q.21i) A regular polygon of 10 sides will have ______ lines of symmetry.v
Answer:
10
Q.22ii) If a regular polygon has 10 lines of symmetry then its order of rotational symmetry is ______v
Answer:
10
Q.23iii) A regular polygon of ‘n’ sides has lines of symmetry and the order of rotational symmetry is ______v
Answer:
n, n